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Answer the following. Write name and formula of raw material from which bakelite is made. - Chemistry

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प्रश्न

Answer the following.

Write name and formula of raw material from which bakelite is made.

टीपा लिहा
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उत्तर

Bakelite is made by condensation of two different monomers:

a. Phenol:

b. Formaldehyde: CH2O

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पाठ 15: Introduction to Polymer Chemistry - Exercises [पृष्ठ ३३८]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 15 Introduction to Polymer Chemistry
Exercises | Q 3. xii. | पृष्ठ ३३८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Write the reactions involved in the preparation of  PVC


Explain the following term: Homopolymers


Write the structures of the monomers used for getting the following polymers

Melamine – formaldehyde polymer


Answer the following in one sentence.

Identify 'B' in the following reaction:

\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'


Answer the following in one sentence.

Define the term: Vulcanization


Answer the following.

Write the reaction of the formation of Nylon 6.


Answer the following.

Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.


Answer the following.

Name the polymer type in which following linkage is present.

\[\begin{array}{cc}\ce{- C - O -}\\||\phantom{.....}\\
\ce{O\phantom{.....}}\end{array}\]


Draw the structures of polymers formed from the following monomers

\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]


Identify condensation polymers and addition polymers from the following.

-(CO(CH2)4 - CONH(CH2)6NH-)n


Attempt the following:

Write the chemical reactions involved in the manufacture of Nylon 6,6.


Write the reaction involved in the formation of:

Bakelite


Answer the following.

Is synthetic rubber better than natural rubber? If so, in what respect?


Write the structure of isoprene and the polymer obtained from it.


write the structure of the monomer used in natural rubber.


Write preparation of low density polythene.


Write chemical reaction for preparation of the following.

Buna-S


Write the name and formulae of the monomers used for the preparation of dacron.


Write chemical reactions for the preparation of high-density polythene.


Define rubber.


Which of the following is used as a substitute for wool?


Which of the following polymer is used in paints?


Identify additional polymers from the following.

I. \[\begin{array}{cc}
\ce{-(CH2 - CH -)_{{n}}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

II. \[\ce{-(CH2 - CH = CH - CH2 -)_{{n}}}\]

III. \[\ce{-(CO(CH2)4 - CONH(CH2)6NH -)_{{n}}}\]

IV.


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Which of the following is the monomer of neoprene?


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Identify the polymer obtained by polymerization of n moles of acrylonitrile.


Which among the following polymers can NOT be remoulded?


Which among the following catalysts is used in the preparation of dacron?


Identify the catalyst used in the manufacture of high density polythene.


Which among the following monomers is used to prepare Teflon?


Which of the following polymers is prepared by using phenol?


Which of the following pair of compounds is used as monomers for bakelite?


Which of the following polymer is used to make blankets?


Which among the following polymers is used to manufacture chemical containers?


The commercial name of polyacrylonitrile is ______.


Match the polymers given in Column I with the type of linkage present in them given in Column II.

Column I Column II
(i) Terylene (a) Glycosidic linkage
(ii) Nylon (b) Ester linkage
(iii) Cellulose (c) Phosphodiester linkage
(iv) Protein (d) Amide linkage
v) RNA  

Which of the following products is formed when benzaldehyde is treated with CH3MgBr and the addition product so obtained is subjected to acid hydrolysis?


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Which of the following polymer has ester linkage?


Trans - form of poly isoprene is:-


Which of the following polymers do not involve cross linkages?


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Write the structure of isoprene and the polymer obtained from it.


Name and draw the structure of the repeating unit in natural rubber.


Write the structure of isoprene and the polymer obtained from it.


Name the compound which reacts with formaldehyde to produce ethyl alcohol.


Write the structure of isoprene and the polymer obtained from it.


Write the structure of isoprene and the polymer obtained from it.


Write the structure of isoprene and the polymer obtained from it.


Name and draw structure of the repeating unit in natural rubber.


Write the structure of isoprene and the polymer obtained from it.


Name and draw structure of the repeating unit in natural rubber.


 Write the structure of isoprene and the polymer obtained from it.


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